Induced Microseismic Event with Strong Rupture Directivity and Superimposed Attenuation Effects
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F23%3A00572249" target="_blank" >RIV/67985891:_____/23:00572249 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/67985530:_____/23:00572249 RIV/00216208:11320/23:10473653
Výsledek na webu
<a href="https://doi.org/10.1785/0220220229" target="_blank" >https://doi.org/10.1785/0220220229</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1785/0220220229" target="_blank" >10.1785/0220220229</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Induced Microseismic Event with Strong Rupture Directivity and Superimposed Attenuation Effects
Popis výsledku v původním jazyce
Rupture directivity is a fundamental effect well known mainly for large natural earthquakes. Its observation for microseismic events is difficult due to small rupture size and short duration, usually insufficient coverage of monitoring array and attenuation along wave propagation paths. Here, we detect the rupture directivity for an induced microseismic event (Mw ∼ 1:2) recorded by a dense surface starlike array during hydraulic fracturing of a shale reservoir in China. We use durations of initial P-wave arrivals as a proxy to peak frequency content. The observed directional and offset dependence of the peak frequencies can be explained by superimposed effects of the rupture directivity of fast, possibly supershear rupture propagation and attenuation, permitting the determination of the event’s fault plane orientation. Furthermore, we implement a simple statistical correction to the amplitudes, proving the inverted source mechanism to be stable, only with a slightly lower, yet unreliable nonshear component.
Název v anglickém jazyce
Induced Microseismic Event with Strong Rupture Directivity and Superimposed Attenuation Effects
Popis výsledku anglicky
Rupture directivity is a fundamental effect well known mainly for large natural earthquakes. Its observation for microseismic events is difficult due to small rupture size and short duration, usually insufficient coverage of monitoring array and attenuation along wave propagation paths. Here, we detect the rupture directivity for an induced microseismic event (Mw ∼ 1:2) recorded by a dense surface starlike array during hydraulic fracturing of a shale reservoir in China. We use durations of initial P-wave arrivals as a proxy to peak frequency content. The observed directional and offset dependence of the peak frequencies can be explained by superimposed effects of the rupture directivity of fast, possibly supershear rupture propagation and attenuation, permitting the determination of the event’s fault plane orientation. Furthermore, we implement a simple statistical correction to the amplitudes, proving the inverted source mechanism to be stable, only with a slightly lower, yet unreliable nonshear component.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10507 - Volcanology
Návaznosti výsledku
Projekt
<a href="/cs/project/GA20-06887S" target="_blank" >GA20-06887S: Seismické vlny v nehomogenních anizotropních viskoelastických prostředích</a><br>
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2023
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Seismological Research Letters
ISSN
0895-0695
e-ISSN
1938-2057
Svazek periodika
94
Číslo periodika v rámci svazku
3
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
12
Strana od-do
1455-1466
Kód UT WoS článku
000990564400006
EID výsledku v databázi Scopus
2-s2.0-85159207544